Transferred Laser-Induced Graphene on Glass Fiber Fabric: A Novel Approach for Frequency-Selective Surface-based Radar Absorbing Structures

초록

Modern fighter jets often employ stealth technology to minimize their radar cross-section. This involves using frequency-selective surface-based radar-absorbing structure (FSS-RAS). Conventional method to fabricating FSS-RAS typically involves using conductive ink, which requiring several steps like dispersing conductive fillers such as carbon nanotubes (CNT) or graphene into a polymer matrix, then applying this mixture through methods like bar-coating or screen printing onto a dielectric substrate. These methods demand special metallic masks for pattern creation, making them chemically demanding and time-intensive. Laser-induced graphene has gained significant interest for its applications in soft/wearable electronics and energy storage, thanks to its outstanding electrical conductivity and easy fabrication. In this study we propose an emerging application of LIG by effectively utilizing it in radar-absorbing structures. Here, we introduce a novel method that substitutes conductive ink with Laser-Induced Graphene (LIG) transferred onto glass fabric prepreg to fabricate FSS-RAS.